Table 1.
Example of annual and 3-year SOC change in the Big Creek watershed when repetitively applying a soybean/no-till, corn/no-till, soybean/no-till 3-year rotation. Because the change varies through time due to initial conditions we cannot use a single 3-year simulation result but must re-run the simulation for each rotation.
| ID | Year | SOC in g C m −2 | Annual rate of SOC change |
Three-year rate SOC change |
|---|---|---|---|---|
| Rotation-1 | 2006 | 2821.563 | ||
| Rotation-1 | 2007 | 3284.941 | 463.378 | |
| Rotation-1 | 2008 | 2895.818 | −389.123 | |
| Rotation-1 | 2009 | 2996.638 | 100.82 | 175.075 |
| Rotation-1 | 2010 | 3107.006 | 110.368 | |
| Rotation-1 | 2011 | 2928.339 | −178.667 | |
| Rotation-1 | 2012 | 3020.881 | 92.542 | 24.243 |
| Rotation-1 | 2013 | 3166.314 | 145.433 | |
| Rotation-1 | 2014 | 2980.428 | −185.886 | |
| Rotation-1 | 2015 | 3071.773 | 91.345 | 50.892 |
| Rotation-1 | 2016 | 3240.262 | 168.489 | |
| Rotation-1 | 2017 | 3049.127 | −191.135 | |
| Rotation-1 | 2018 | 3135.453 | 86.326 | −5.019 |
| Rotation-1 | 2019 | 3314.312 | 178.859 | |
| Rotation-1 | 2020 | 3116.223 | −198.089 | |
| Rotation-1 | 2021 | 3198.378 | 82.155 | −4.171 |
| Rotation-1 | 2022 | 3383.401 | 185.023 | |
| Rotation-1 | 2023 | 3179.002 | −204.399 | |
| Rotation-1 | 2024 | 3257.93 | 78.928 | −3.227 |
| Rotation-1 | 2025 | 3446.954 | 189.024 | |
| Rotation-1 | 2026 | 3239.724 | −207.23 |